Eleven-year-old Luke and his dog, Haru, are the best of friends. Totally inseparable. But when their nasty landlord falsely accuses Haru of biting her, Haru is kidnapped! As Luke and his friends go on a serious mission to find and bring Haru home again, they discover mysterious experiments happening at the old laboratory at Painted Lake, owned by an evil multibillionaire named Mr. Thomas Sinclair. And Luke and his friends soon fear that Sinclair's scientists could be doing illegal testing that may endanger Haru and their whole town. As more strange clues emerge, the boys realize their world is changing fast, and soon Painted Lake is plagued by zombie attacks. But the love between Luke and Haru endures, ultimately helping to save them all.